小编use*_*916的帖子

将数据添加到数据库时,date_to和date_from中出现错误.在sql server数据库中,date_to和date_from的数据类型是date.建议一些解决方案

try
{
   cmd = new SqlCommand("insert into license1 values(@l_id,@customer_id,@d_id,@device_name,@from,@to)", cn);

   cmd.Parameters.AddWithValue("@l_id", license_id.Text);
   cmd.Parameters.AddWithValue("@customer_id", c_comboBox4.Text);
   cmd.Parameters.AddWithValue("@d_id", d_id_comboBox4.Text);
   cmd.Parameters.AddWithValue("@device_name", d_name_comboBox5.Text);
   cmd.Parameters.AddWithValue("@to", date_to.Text);
   cmd.Parameters.AddWithValue("@from", date_from.Text);

   cn.Open();
   a = cmd.ExecuteNonQuery();
   if (a > 0)
   {
      MessageBox.Show("Data Submitted");
   }

 }
 catch (Exception ex)
 {
      MessageBox.Show(ex.Message);
 }

我正在尝试学习python中pickle的概念.据我所知,pickle用于在python中存储对象,然后我们可以在文件中访问它们.我为此编写了简单的脚本,但它显示错误.我不明白为什么

import pickle

plist= ["one","a","two","b","End!!"]
#p={'hi','hello','hola'}
file=open("pickle.txt","w")
pickle.dump(plist, file)
file.close()

错误:

Traceback (most recent call last):
  File "C:/Python33/pickle.py", line 1, in <module>
    import pickle
  File "C:/Python33\pickle.py", line 6, in <module>
    pickle.dump(plist, file)
AttributeError: 'module' object has no attribute 'dump'

我是python的新手,我已经在python中编写了一个程序,无需任何GUI即可登录.我知道这是最简单的一个,但我不明白这个问题.

class login:
    def __init__(self,id,pas):
        self.id="admin"
        self.pas="admin"

    def check(id,pas):
        print self.id
        print lod.id
        if(self.id==log.id and self.pas==log.pas):
            print "Login success!"


log=login("","")
log.check(raw_input("Enter Login ID:"),
        input("Enter password: "))

print "Login Page" 

错误:输入登录ID:admin输入密码:admin

Traceback (most recent call last):
  File "C:/Python27/login.py", line 15, in <module>
    input("Enter password: "))
  File "<string>", line 1, in <module>
NameError: name 'admin' is not defined